I used to go library,_____?Adid IBdidn't ICused IDdo IAnswer: B. didn't I Read Explanation: Sentence ലെ auxiliary verb ' used to ' ആണെങ്കിൽ question tag ലെ auxiliary verb 'did' ആയിരിക്കും. ഇവിടെ കൂടെ subject ആയ 'I' യും എഴുതണം.Read more in App